1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IceJOKER [234]
1 year ago
14

How to write an expression with a negative exponent as an equivalent expression with a positive exponent ??

Mathematics
1 answer:
borishaifa [10]1 year ago
4 0

Answer:

I need points

Step-by-step explanation:

because i do need points

this app is a scam

You might be interested in
Linda goes water-skiing one sunny afternoon. After skiing for 15 min, she signals to the driver of the boat to take her back to
trasher [3.6K]
60 = a * (-30)^2
a = 1/15
So y = (1/15)x^2


abc)
The derivative of this function is 2x/15. This is the slope of a tangent at that point.
If Linda lets go at some point along the parabola with coordinates (t, t^2 / 15), then she will travel along a line that was TANGENT to the parabola at that point.
Since that line has slope 2t/15, we can determine equation of line using point-slope formula:
y = m(x-x0) + y0
y = 2t/15 * (x - t) + (1/15)t^2
Plug in the x-coordinate "t" that was given for any point.


d)
We are looking for some x-coordinate "t" of a point on the parabola that holds the tangent line that passes through the dock at point (30, 30).
So, use our equation for a general tangent picked at point (t, t^2 / 15):
y = 2t/15 * (x - t) + (1/15)t^2
And plug in the condition that it must satisfy x=30, y=30.
30 = 2t/15 * (30 - t) + (1/15)t^2
t = 30 ± 2√15 = 8.79 or 51.21
The larger solution does in fact work for a tangent that passes through the dock, but it's not important for us because she would have to travel in reverse to get to the dock from that point.
So the only solution is she needs to let go x = 8.79 m east and y = 5.15 m north of the vertex.
4 0
3 years ago
Trig if line segment AB =20 and line segment AC=8, find
Nina [5.8K]

Answer:

23.6 or A

Step-by-step explanation:

We have sin already. 8/20

We use inverse sin of 0.4 (8/20)

The answer of inverse sin is 23.57817848

or 23.6

8 0
3 years ago
A falling object accerlates from -10.0m/s to -30.0m/s how much time does that take
Leya [2.2K]

Answer:

2.04 seconds

Step-by-step explanation:

Falling objects near the surface of the earth have an acceleration of -9.81 m/s².

Acceleration is the change in velocity over change in time:

a = (v − v₀) / t

-9.81 = (-30.0 − (-10.0)) / t

-9.81 = -20.0 / t

t = 2.04

It takes 2.04 seconds.

5 0
3 years ago
Mr.james runs a petting zoo. he records the number of visitors each week,v, t weeks, after opening the petting zoo. according to
melisa1 [442]

Answer:

\large \boxed{\text{19 visitors/mo}}

Step-by-step explanation:

The average rate of change is the change in the number of visitors divided by the change in the number of months.

1. Change in number of  visitors  

Change in visitors = 182 -125 = 57 visitors

2. Change in number of weeks

Change in time = 5 - 2 = 3 months

3. Average rate of change

\begin{array}{rcl}\text{Average rate of change} &= &\dfrac{\text{change in visitors}}{\text{change in months}}\\\\&= &\dfrac{\text{57 visitors}}{\text{3 mo}}\\\\& = & \textbf{19 visitors/mo}\\\end{array}\\\text{The average rate of change is $\large \boxed{\textbf{19 visitors/mo}}$}

5 0
3 years ago
A computer fan's speed rises as the computer heats up. Based on the table, what is MOST LIKELY the fan's speed at 7 minutes?
kumpel [21]

Answer:

2,800

Step-by-step explanation:

Because they are adding 700 each time.

7 0
2 years ago
Other questions:
  • There are 200 end of the year school dance tickets available. Students who have perfect attendance are able to purchase them in
    5·1 answer
  • What do a parallelogram and kite have in common?
    15·1 answer
  • After two plays the wildcats gained a total of 16 yards. If X represents the number of yards for play one, and Y represents the
    8·1 answer
  • you invest $1000 dollars in an account at 2.5% per year simple interest. How much will you have in the account at the beginning
    9·2 answers
  • Solve for x, 0 ≤ x ≤2π (2cosx-1)(2sinx+√3 ) = 0
    9·1 answer
  • Two cars are on the same straight road. Car A moves east at 55 mph and sounds its horn at 625 Hz. Rank from highest to lowest th
    6·1 answer
  • What is the value of x for y = 12 (4x + 6) when y = 8?<br> Plz I’m so lost
    14·1 answer
  • A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $20/ft and on the other three s
    7·1 answer
  • Kim is solving a quadratic trinomial equation and has correctly factored it into (x+3)(x-2)=0.
    14·1 answer
  • Calculate the area under the graph of f(x) = 1/xlnx from x = e to x = e^e
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!